Figure 2.

Overlapping symptoms of obstructive sleep apnea (OSA) and major depression. Adapted from: American Academy of Sleep Medicine. International Classification of Sleep Disorders, Second Edition, Diagnostic and Coding Manual. Westchester, IL: American Academy of Sleep Medicine; 2005;¹⁶ American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision. Washington, DC: American Psychiatric Association; 2000;¹⁷ and Kryger, MH, Roth T, Dement WC (eds). Principles and Practice of Sleep Medicine, Fourth Edition. Philadelphia, PA: W.B. Saunders; 2005.¹⁸